forked from Minki/linux
905e75c46d
We unified the Freescale pci/pcie initialization by changing the fsl_pci to a platform driver. In previous PCI code architecture the initialization routine is called at board_setup_arch stage. Now the initialization is done in probe function which is architectural better. Also It's convenient for adding PM support for PCI controller in later patch. Now we registered pci controllers as platform devices. So we combine two initialization code as one platform driver. Signed-off-by: Jia Hongtao <B38951@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Chunhe Lan <Chunhe.Lan@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
/*
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* Copyright 2010-2011 Freescale Semiconductor, Inc.
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*
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* Author: Roy Zang <tie-fei.zang@freescale.com>
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*
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* Description:
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* P1023 RDS Board Setup
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/module.h>
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#include <linux/fsl_devices.h>
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#include <linux/of_platform.h>
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#include <linux/of_device.h>
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#include <asm/time.h>
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#include <asm/machdep.h>
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#include <asm/pci-bridge.h>
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#include <mm/mmu_decl.h>
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#include <asm/prom.h>
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#include <asm/udbg.h>
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#include <asm/mpic.h>
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#include "smp.h"
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#include <sysdev/fsl_soc.h>
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#include <sysdev/fsl_pci.h>
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#include "mpc85xx.h"
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/* ************************************************************************
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*
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* Setup the architecture
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*
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*/
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static void __init mpc85xx_rds_setup_arch(void)
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{
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struct device_node *np;
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if (ppc_md.progress)
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ppc_md.progress("p1023_rds_setup_arch()", 0);
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/* Map BCSR area */
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np = of_find_node_by_name(NULL, "bcsr");
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if (np != NULL) {
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static u8 __iomem *bcsr_regs;
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bcsr_regs = of_iomap(np, 0);
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of_node_put(np);
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if (!bcsr_regs) {
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printk(KERN_ERR
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"BCSR: Failed to map bcsr register space\n");
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return;
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} else {
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#define BCSR15_I2C_BUS0_SEG_CLR 0x07
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#define BCSR15_I2C_BUS0_SEG2 0x02
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/*
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* Note: Accessing exclusively i2c devices.
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*
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* The i2c controller selects initially ID EEPROM in the u-boot;
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* but if menu configuration selects RTC support in the kernel,
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* the i2c controller switches to select RTC chip in the kernel.
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*/
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#ifdef CONFIG_RTC_CLASS
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/* Enable RTC chip on the segment #2 of i2c */
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clrbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG_CLR);
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setbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG2);
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#endif
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iounmap(bcsr_regs);
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}
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}
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mpc85xx_smp_init();
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fsl_pci_assign_primary();
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}
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machine_arch_initcall(p1023_rds, mpc85xx_common_publish_devices);
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static void __init mpc85xx_rds_pic_init(void)
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{
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struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
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MPIC_SINGLE_DEST_CPU,
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0, 256, " OpenPIC ");
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BUG_ON(mpic == NULL);
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mpic_init(mpic);
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}
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static int __init p1023_rds_probe(void)
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{
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unsigned long root = of_get_flat_dt_root();
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return of_flat_dt_is_compatible(root, "fsl,P1023RDS");
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}
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define_machine(p1023_rds) {
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.name = "P1023 RDS",
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.probe = p1023_rds_probe,
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.setup_arch = mpc85xx_rds_setup_arch,
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.init_IRQ = mpc85xx_rds_pic_init,
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.get_irq = mpic_get_irq,
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.restart = fsl_rstcr_restart,
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.calibrate_decr = generic_calibrate_decr,
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.progress = udbg_progress,
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#ifdef CONFIG_PCI
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.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
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#endif
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};
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